Starfield is available now for PC and Xbox in Early Access if you purchased the Premium or higher level version or addon to the game. We’ve been playing the PC version and while the game is overall very impressive, there are major missing features, especially the lack of FOV (Field of Vision) slider that should be an industry standard. So in the meantime, here is a fix until Bethesda (hopefully) patches in what should have been included already.
Create a text document in Starfield's file folder on your PC named "StarfieldCustom.ini", with this text:
[Camera]
fFPWorldFOV=100.0000
fTPWorldFOV=100.0000
The first of those options is for the game's FOV while in first-person view. The second of those is for the game's FOV while in third-person view.
Tweak the FOV numbers to your liking.
The game also have some weird bug or setting with contrast/gamma/black levels and since there are no in game controls for these items, we’ll be searching for a fix ASAP. EDIT: Temporary fix found!